KAIWERA DOWNS WIND FARM.

from Kaiwera Downs Wind Farm Newsletter - February 2023

February 2023 Newsletter.

WELCOME.

Welcome to our first newsletter. We’ll send these to you every couple of months to keep you up to date with what we’re doing up on the hill. Please forward this to anyone who might be interested. They can join our distribution list for future updates on kaiweradownswindfarm@mercury.co.nz

The project broke ground last spring and since then our teams have been making great progress. We’re on track!

THE STAGE 1 PROJECT.

Stage 1 of the Kaiwera Downs Wind Farm project is located approximately 15km south-east of Gore. This stage of the wind farm will be 10 4.3-megawatt wind turbines, connected to the local grid via an 18-km 33kV transmission line at the Gore Substation.

Project Status

To date we have:

• Upgraded 3.0km of road between SH93 and the site entrance

• Established the site compound and site facilities

• Constructed an access track network reaching more than 3km (only 3km to go)

• Established the on-site concrete batch plant ready for operations in March

• Laid around 3km (of a total of 6 km) of internal cabling between turbines

• Installed 158 out of 179 transmission line poles

• Over the coming months civil and electrical works will continue, however there will also be a shift in focus towards turbine foundations

STAGE 1 KEY PROJECT FACTS.

Installed Capacity

Annual Production

43MW

148 GWh/yr

Wind turbine Power Vestas V136 - 4.3MW

Number of Turbines 10

Tower Height 77m

Blade height 145m

Rotor Diameter 136m

Transmission Line 18km of 33kV overhead transmission on monopoles

Construction Time Frame Approximately 13 months

• The project is on track to receive the first turbines at the end of May 2023

For more information, or to provide any feedback, please visit: mercury.co.nz/kaiweradowns or email: kaiweradownswindfarm@mercury.co.nz

COMMUNITY ENGAGEMENT.

We want to stay in touch with the communities around the wind farm, with transparent and open communication. A Community Consultative Group has been established made up of different representatives from within the community. This Group’s objective is to make sure that there is information flow between Mercury and the community, and it will be an on-going point of contact for the community.

STAGE 1 KAIWERA DOWNS WIND FARM FAQ’S.

Who will be operating the wind farm?

Tararua Wind Power Limited, a fully owned subsidiary of Mercury will own and operate the wind farm once operational. Mercury are an owner, operator and developer of renewable generation assets across New Zealand, primarily consisting of wind, geothermal and hydro projects.

Isn’t renewable energy unreliable?

Wind is clean and abundant in New Zealand, and our monitoring at the Kaiwera Down wind farm site has shown that it is a particularly good place for wind.

The relationship between energy and wind is also pretty awesome – when the speed of wind doubles, the energy it produces increases eight-fold. Wind also has a great degree of predictability to it over the course of a year. That means with the right systems and tools we can use our other renewable generation to keep generating renewable energy on less windy days.

How does the community get their say?

The functions of the Consultative Group also include acting as a forum for letting us know any community concerns about the construction and on-going operation of the Kaiwera Downs Wind Farm, developing ways of addressing (where possible) and managing those concerns, and reviewing the implementation of measures to resolve and manage community concerns.

Registrations of interest to join the Community Consultative Group can be lodged by emailing: kaiweradownswindfarm@mercury.co.nz

Through our power stations and wind farms, Mercury is part of a lot of New Zealand communities, and we are committed to open and honest dialogue with stakeholders in that community. We want to be a ‘good neighbour’, and build and enhance community acceptance and trust in all projects and in the renewable energy industry. Your feedback is welcome if you have any concerns or believe you can provide local insight into matters which we should address.

Are there any benefits to the community?

Mercury is committed to providing support for the local community and we look forward to talking to the community and learning more about how we can work together. This will include through the Consultative Group and also through other discussion with stakeholders in the community.

Can renewables provide large-scale power?

Yes! The Kaiwera Downs Wind Farm will produce enough clean energy each year to power more than 20,000 homes. This is the equivalent of removing about 17,000 cars from our roads.

Are turbines noisy?

Modern wind turbines make relatively little noise. The level of sound can vary considerably depending on the shape of the land, the position of the listener and the speed of the wind. In most instances, it is possible to carry on a conversation at the base of a wind turbine without having to raise your voice.

The sound that a modern wind turbine produces is most commonly described as a cyclic whooshing or swishing sound.

Extensive assessments are undertaken through the design of the project to ensure that noise will not negatively impact on residents. Additionally, once operational Mercury will undertake monitoring to ensure the project is meeting the required standards.